it was early days of the boards as far as I can remember. It can be a slow ride. It use to be 50 mg/mL as well. Now we know it can tamp down estrogen. Probably 600 mg/w can crash estrogen for some guys. At long cycle length we know that it can raise red cell numbers pretty high. At the long end of the cycle red cells are so high it can definitely increase vascularity so maybe that was part of the myth basis.
I found a different way to use it. If added into a cycle at mid cycle it hits fast and hard. I figured it out by accident. I was on a cycle of Test/NPP and 8 weeks in I took a 500 mg shot. 5 days later I was up 8 lbs and looked drier. So, to me I disproved to long wait hypothesis.
At 20 weeks at high dose it is going to but your hematocrit pretty high. I knew one guy. His base was 1800 mg/wk sustanon and 1500 mg/w EQ. I know blood work so he asked me what I thought of his. His hematocrit was 66%. Later he was diagnosed with an aortic aneurysm.